A DEVICE FOR INDICATING THE RESERVE LIFE (DURATION) OF LIQUIFIED PETROLEUM GAS IN A CYLINDER

摘要

A device for indicating the reserve life of liquefied petroleum gas in a cylinder comprising of a below assembly and one or more spring assembly or assemblies placed in between two plates, the said below assembly consisting of a below closed at one end and containing within it a fluid, the other end of the below assembly being connected to a transparent capillary tube, the said fluid also filling the transparent tube being supported either on the circumference of a container which is graduated or to any other graduated body, the said container enclosing the said two plates, below assembly and spring assembly, the scales being graduated to indicate the reserve life of liquefied petroleum gas in a cylinder at any moment from the position of fluid in the transparent capillary tube with means being provided for adjusting the fluid position in the transparent capillary tube so as to coincide with the maximum limit in the graduated scale corresponding to the full life when a new liquified petroleum gas cylinder is placed thereon, the whole arrangement being such that when the cylinder is placed above the container enclosing the below assembly and spring assembly, the weight of its contents produces pressure within the bellow assembly forcing the fluid from the bellow into the transparent capillary tube to a level proportionate to its weights, the level of which is read from the graduated scale.